do you have /usr as a partition? I think there is a bug (which has been filed, but I can't find the link) in udev which causes it to start prior to system partitions._________________# touch it
touch: cannot touch `it': Permission denied

The new flag is USE="hwdb" instead of the obsolete USE="extras" bundle.

This issue still exists. I have sys-fs/udev-196-r1 with hwdb use flag installed, but i still see the same error message a few times in the log file during boot.

Now it's a completely different problem - as of 196, pci-db/usb-db are gone. Now, there's a builtin hwdb command in udev that handles those.
Likely, some of the rules not installed by udev need to be updated. If it's a rule installed by udev, it's a bug.

The new flag is USE="hwdb" instead of the obsolete USE="extras" bundle.

This issue still exists. I have sys-fs/udev-196-r1 with hwdb use flag installed, but i still see the same error message a few times in the log file during boot.

Now it's a completely different problem - as of 196, pci-db/usb-db are gone. Now, there's a builtin hwdb command in udev that handles those.
Likely, some of the rules not installed by udev need to be updated. If it's a rule installed by udev, it's a bug.

Oke, thanks for the explanation. Actually it's not udev, but the old version of udisks-1.0.4-r3. The relevant line in 80-udisks.rules

Is there any getting rid of this message? Coloring of dmesg made it stand out in the crownd with that red color Looks like a lot packages still use old version of udisks.
This is what is looks like at my system